While a great deal of work in recent years has focused on the role of cognitive evaluation of events in the elicitation of anger, little has been said about how the interpersonal context of events colors such evaluation. In this study, we varied critical features of events identified by theorists (provocation, intent, and apology) along with the interpersonal context of the events. We examined the reactions of preadolescent and young adolescent boys and girls to hypothetical situations involving anger-provoking actions by best friends and classmates (casual acquaintances). The situations involving best friends elicited higher ratings of personal violation, more intense and prolonged negative emotion (including sadness and hurt feelings in addition to anger), and more coping attempts geared toward relationship preservation than did the situations involving classmates. Girls seemed to be particularly sensitive to relationship differences, consistently reporting different responses when friends and classmates were involved. Findings associated with the theoretical features of anger elicitation (provocation, intent, and apology), while generally fitting predictions, were less clear and convincing, overall, than the effects of relationship context. Findings related to age were limited but were consistent with research on the changing nature and meaning of friendship as children enter adolescence. Overall, our findings underscore the importance of relationship context as a backdrop against which emotional experience must be viewed.